I can understand why some type of heavy machinery would probably require different oil to a lawn mower but there are lawn mowers that require different oil to other lawn mowers.
If the answer is “because that’s how they were designed” then why? Wouldn’t a common oil make more sense?
In: 2
Different engines work at different RPM and different work loads to do their jobs correctly. A push lawnmower uses direct drive and has to push at a certain RPM to achieve the desired results. A riding lawnmower needs to drive the lawnmower and also have a PTO to drive the blades. With the PTO, you can use gear ratios to drive the blades at the desired speed. One operates at 7000 RPM. One is at 3500 RPM. One needs a thinner oil, one needs a thicker oil based on their expected load and drive style.
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